Further Examination of Formal Operational Reasoning Abilities

Autor:	Roberge, James J., Flexer, Barbara K.
Zdroj:	Child Development, 1979 Jun 01. 50(2), 478-484.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/1129426 Zobrazit plný text záznamu